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tmux/key-string.c

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/* $OpenBSD$ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <string.h>
#include "tmux.h"
static key_code key_string_search_table(const char *);
static key_code key_string_get_modifiers(const char **);
static const struct {
const char *string;
key_code key;
} key_string_table[] = {
/* Function keys. */
{ "F1", KEYC_F1 },
{ "F2", KEYC_F2 },
{ "F3", KEYC_F3 },
{ "F4", KEYC_F4 },
{ "F5", KEYC_F5 },
{ "F6", KEYC_F6 },
{ "F7", KEYC_F7 },
{ "F8", KEYC_F8 },
{ "F9", KEYC_F9 },
{ "F10", KEYC_F10 },
{ "F11", KEYC_F11 },
{ "F12", KEYC_F12 },
{ "IC", KEYC_IC },
{ "Insert", KEYC_IC },
{ "DC", KEYC_DC },
{ "Delete", KEYC_DC },
{ "Home", KEYC_HOME },
{ "End", KEYC_END },
{ "NPage", KEYC_NPAGE },
{ "PageDown", KEYC_NPAGE },
{ "PgDn", KEYC_NPAGE },
{ "PPage", KEYC_PPAGE },
{ "PageUp", KEYC_PPAGE },
{ "PgUp", KEYC_PPAGE },
{ "Tab", '\011' },
{ "BTab", KEYC_BTAB },
{ "Space", ' ' },
{ "BSpace", KEYC_BSPACE },
{ "Enter", '\r' },
{ "Escape", '\033' },
/* Arrow keys. */
{ "Up", KEYC_UP|KEYC_CURSOR },
{ "Down", KEYC_DOWN|KEYC_CURSOR },
{ "Left", KEYC_LEFT|KEYC_CURSOR },
{ "Right", KEYC_RIGHT|KEYC_CURSOR },
/* Numeric keypad. */
{ "KP/", KEYC_KP_SLASH|KEYC_KEYPAD },
{ "KP*", KEYC_KP_STAR|KEYC_KEYPAD },
{ "KP-", KEYC_KP_MINUS|KEYC_KEYPAD },
{ "KP7", KEYC_KP_SEVEN|KEYC_KEYPAD },
{ "KP8", KEYC_KP_EIGHT|KEYC_KEYPAD },
{ "KP9", KEYC_KP_NINE|KEYC_KEYPAD },
{ "KP+", KEYC_KP_PLUS|KEYC_KEYPAD },
{ "KP4", KEYC_KP_FOUR|KEYC_KEYPAD },
{ "KP5", KEYC_KP_FIVE|KEYC_KEYPAD },
{ "KP6", KEYC_KP_SIX|KEYC_KEYPAD },
{ "KP1", KEYC_KP_ONE|KEYC_KEYPAD },
{ "KP2", KEYC_KP_TWO|KEYC_KEYPAD },
{ "KP3", KEYC_KP_THREE|KEYC_KEYPAD },
{ "KPEnter", KEYC_KP_ENTER|KEYC_KEYPAD },
{ "KP0", KEYC_KP_ZERO|KEYC_KEYPAD },
{ "KP.", KEYC_KP_PERIOD|KEYC_KEYPAD },
/* Mouse keys. */
KEYC_MOUSE_STRING(MOUSEDOWN1, MouseDown1),
KEYC_MOUSE_STRING(MOUSEDOWN2, MouseDown2),
KEYC_MOUSE_STRING(MOUSEDOWN3, MouseDown3),
KEYC_MOUSE_STRING(MOUSEUP1, MouseUp1),
KEYC_MOUSE_STRING(MOUSEUP2, MouseUp2),
KEYC_MOUSE_STRING(MOUSEUP3, MouseUp3),
KEYC_MOUSE_STRING(MOUSEDRAG1, MouseDrag1),
KEYC_MOUSE_STRING(MOUSEDRAG2, MouseDrag2),
KEYC_MOUSE_STRING(MOUSEDRAG3, MouseDrag3),
KEYC_MOUSE_STRING(MOUSEDRAGEND1, MouseDragEnd1),
KEYC_MOUSE_STRING(MOUSEDRAGEND2, MouseDragEnd2),
KEYC_MOUSE_STRING(MOUSEDRAGEND3, MouseDragEnd3),
KEYC_MOUSE_STRING(WHEELUP, WheelUp),
KEYC_MOUSE_STRING(WHEELDOWN, WheelDown),
KEYC_MOUSE_STRING(SECONDCLICK1, SecondClick1),
KEYC_MOUSE_STRING(SECONDCLICK2, SecondClick2),
KEYC_MOUSE_STRING(SECONDCLICK3, SecondClick3),
KEYC_MOUSE_STRING(DOUBLECLICK1, DoubleClick1),
KEYC_MOUSE_STRING(DOUBLECLICK2, DoubleClick2),
KEYC_MOUSE_STRING(DOUBLECLICK3, DoubleClick3),
KEYC_MOUSE_STRING(TRIPLECLICK1, TripleClick1),
KEYC_MOUSE_STRING(TRIPLECLICK2, TripleClick2),
KEYC_MOUSE_STRING(TRIPLECLICK3, TripleClick3),
};
/* Find key string in table. */
static key_code
key_string_search_table(const char *string)
{
u_int i, user;
for (i = 0; i < nitems(key_string_table); i++) {
if (strcasecmp(string, key_string_table[i].string) == 0)
return (key_string_table[i].key);
}
if (sscanf(string, "User%u", &user) == 1 && user < KEYC_NUSER)
return (KEYC_USER + user);
return (KEYC_UNKNOWN);
}
/* Find modifiers. */
static key_code
key_string_get_modifiers(const char **string)
{
key_code modifiers;
modifiers = 0;
while (((*string)[0] != '\0') && (*string)[1] == '-') {
switch ((*string)[0]) {
case 'C':
case 'c':
modifiers |= KEYC_CTRL;
break;
case 'M':
case 'm':
modifiers |= KEYC_META;
break;
case 'S':
case 's':
modifiers |= KEYC_SHIFT;
break;
default:
*string = NULL;
return (0);
}
*string += 2;
}
return (modifiers);
}
/* Lookup a string and convert to a key value. */
key_code
key_string_lookup_string(const char *string)
{
static const char *other = "!#()+,-.0123456789:;<=>'\r\t";
key_code key;
u_int u;
key_code modifiers;
struct utf8_data ud;
u_int i;
enum utf8_state more;
wchar_t wc;
/* Is this no key or any key? */
if (strcasecmp(string, "None") == 0)
return (KEYC_NONE);
if (strcasecmp(string, "Any") == 0)
return (KEYC_ANY);
/* Is this a hexadecimal value? */
if (string[0] == '0' && string[1] == 'x') {
if (sscanf(string + 2, "%x", &u) != 1)
return (KEYC_UNKNOWN);
if (u > 0x1fffff)
return (KEYC_UNKNOWN);
return (u);
}
/* Check for modifiers. */
modifiers = 0;
if (string[0] == '^' && string[1] != '\0') {
modifiers |= KEYC_CTRL;
string++;
}
modifiers |= key_string_get_modifiers(&string);
if (string == NULL || string[0] == '\0')
return (KEYC_UNKNOWN);
/* Is this a standard ASCII key? */
if (string[1] == '\0' && (u_char)string[0] <= 127) {
key = (u_char)string[0];
if (key < 32)
return (KEYC_UNKNOWN);
} else {
/* Try as a UTF-8 key. */
if ((more = utf8_open(&ud, (u_char)*string)) == UTF8_MORE) {
if (strlen(string) != ud.size)
return (KEYC_UNKNOWN);
for (i = 1; i < ud.size; i++)
more = utf8_append(&ud, (u_char)string[i]);
if (more != UTF8_DONE)
return (KEYC_UNKNOWN);
if (utf8_combine(&ud, &wc) != UTF8_DONE)
return (KEYC_UNKNOWN);
return (wc|modifiers);
}
/* Otherwise look the key up in the table. */
key = key_string_search_table(string);
if (key == KEYC_UNKNOWN)
return (KEYC_UNKNOWN);
}
/* Convert the standard control keys. */
if (key < KEYC_BASE && (modifiers & KEYC_CTRL) && !strchr(other, key)) {
if (key >= 97 && key <= 122)
key -= 96;
else if (key >= 64 && key <= 95)
key -= 64;
else if (key == 32)
key = 0;
else if (key == 63)
key = 127;
else
return (KEYC_UNKNOWN);
modifiers &= ~KEYC_CTRL;
}
return (key|modifiers);
}
/* Convert a key code into string format, with prefix if necessary. */
const char *
key_string_lookup_key(key_code key, int with_flags)
{
key_code saved = key;
static char out[64];
char tmp[8];
const char *s;
u_int i;
struct utf8_data ud;
size_t off;
*out = '\0';
/* Literal keys are themselves. */
if (key & KEYC_LITERAL) {
snprintf(out, sizeof out, "%c", (int)(key & 0xff));
goto out;
}
/* Display C-@ as C-Space. */
if ((key & (KEYC_MASK_KEY|KEYC_MASK_MODIFIERS)) == 0)
key = ' '|KEYC_CTRL;
/* Fill in the modifiers. */
if (key & KEYC_CTRL)
strlcat(out, "C-", sizeof out);
if (key & KEYC_META)
strlcat(out, "M-", sizeof out);
if (key & KEYC_SHIFT)
strlcat(out, "S-", sizeof out);
key &= KEYC_MASK_KEY;
/* Handle no key. */
if (key == KEYC_NONE) {
s = "None";
goto append;
}
/* Handle special keys. */
if (key == KEYC_UNKNOWN) {
s = "Unknown";
goto append;
}
if (key == KEYC_ANY) {
s = "Any";
goto append;
}
if (key == KEYC_FOCUS_IN) {
s = "FocusIn";
goto append;
}
if (key == KEYC_FOCUS_OUT) {
s = "FocusOut";
goto append;
}
if (key == KEYC_PASTE_START) {
s = "PasteStart";
goto append;
}
if (key == KEYC_PASTE_END) {
s = "PasteEnd";
goto append;
}
if (key == KEYC_MOUSE) {
s = "Mouse";
goto append;
}
if (key == KEYC_DRAGGING) {
s = "Dragging";
goto append;
}
if (key == KEYC_MOUSEMOVE_PANE) {
s = "MouseMovePane";
goto append;
}
if (key == KEYC_MOUSEMOVE_STATUS) {
s = "MouseMoveStatus";
goto append;
}
if (key == KEYC_MOUSEMOVE_STATUS_LEFT) {
s = "MouseMoveStatusLeft";
goto append;
}
if (key == KEYC_MOUSEMOVE_STATUS_RIGHT) {
s = "MouseMoveStatusRight";
goto append;
}
if (key == KEYC_MOUSEMOVE_BORDER) {
s = "MouseMoveBorder";
goto append;
}
if (key >= KEYC_USER && key < KEYC_USER + KEYC_NUSER) {
snprintf(tmp, sizeof tmp, "User%u", (u_int)(key - KEYC_USER));
strlcat(out, tmp, sizeof out);
goto out;
}
/* Try the key against the string table. */
for (i = 0; i < nitems(key_string_table); i++) {
if (key == (key_string_table[i].key & KEYC_MASK_KEY))
break;
}
if (i != nitems(key_string_table)) {
strlcat(out, key_string_table[i].string, sizeof out);
goto out;
}
/* Is this a UTF-8 key? */
if (key > 127 && key < KEYC_BASE) {
if (utf8_split(key, &ud) == UTF8_DONE) {
off = strlen(out);
memcpy(out + off, ud.data, ud.size);
out[off + ud.size] = '\0';
goto out;
}
}
/* Invalid keys are errors. */
if (key > 255) {
snprintf(out, sizeof out, "Invalid#%llx", saved);
goto out;
}
/* Check for standard or control key. */
if (key <= 32) {
if (key == 0 || key > 26)
xsnprintf(tmp, sizeof tmp, "C-%c", (int)(64 + key));
else
xsnprintf(tmp, sizeof tmp, "C-%c", (int)(96 + key));
} else if (key >= 32 && key <= 126) {
tmp[0] = key;
tmp[1] = '\0';
} else if (key == 127)
xsnprintf(tmp, sizeof tmp, "C-?");
else if (key >= 128)
xsnprintf(tmp, sizeof tmp, "\\%llo", key);
strlcat(out, tmp, sizeof out);
goto out;
append:
strlcat(out, s, sizeof out);
out:
if (with_flags && (saved & KEYC_MASK_FLAGS) != 0) {
strlcat(out, "[", sizeof out);
if (saved & KEYC_LITERAL)
strlcat(out, "L", sizeof out);
if (saved & KEYC_KEYPAD)
strlcat(out, "K", sizeof out);
if (saved & KEYC_CURSOR)
strlcat(out, "C", sizeof out);
if (saved & KEYC_IMPLIED_META)
strlcat(out, "I", sizeof out);
if (saved & KEYC_BUILD_MODIFIERS)
strlcat(out, "B", sizeof out);
strlcat(out, "]", sizeof out);
}
return (out);
}
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